import unittest

from tudelft.utilities.immutablelist.FixedList import FixedList
from tudelft.utilities.immutablelist.ImmutableList import ImmutableList
from tudelft.utilities.immutablelist.PowerSet import PowerSet


class PowersetTest(unittest.TestCase):
	list1=FixedList[int] ([1, 2, 3])

	#blabla
	def test(self):
		ps = PowerSet[int](self.list1)
		self.assertEquals(8, ps.size())
		# first element is empty
		self.assertEqual(0, ps.get(0).size())
		# last element is the full set
		self._allElementsMatch(self.list1, ps.get(7))
		self._allElementsMatch(FixedList[int]([1, 3]), ps.get(5))

	def testOutOfBounds(self):
		ps = PowerSet[int](self.list1)
		self.assertRaises(IndexError, lambda: ps.get(8))

	def _allElementsMatch(self, l1:ImmutableList[int] ,
			l2:ImmutableList[int] ):
		self.assertEqual(l1.size(), l2.size()) 
		for i in range(l1.size()):
			self.assertEqual(l1.get(i), l2.get(i))

	def testPrint(self):
		print(PowerSet(FixedList([1,2,3,4])))